Thoughts on the hazardous classification of an extraction process using hexane.

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It sounds like they are already used to doing it the hard way. Why open a can of worms if you don't have to? If it ain't broke, don't fix it.

I am normally inclined to agree that changing things merely to change them rarely benefits anyone. But for some reason someone brought this idea up. There may be some perceived benefit to change in this case. But I would not be doing it based on free advice from semi-anonymous people on the Internet (or at NFPA). I would want to hire an actual expert willing to bet his PE license (and liability insurance) on his advice.